*SUPPORT*
IN: tufa wif gazzer wif OUT: YELLOW GREEN GREEN
IN: wif blicket tufa OUT: YELLOW GREEN
IN: lug blicket zup OUT: BLUE RED
IN: zup blicket tufa OUT: YELLOW BLUE
IN: zup wif tufa lug gazzer tufa gazzer tufa OUT: BLUE GREEN YELLOW RED YELLOW YELLOW
IN: wif blicket wif OUT: GREEN GREEN
IN: lug blicket lug OUT: RED RED
IN: lug fep tufa blicket zup gazzer lug OUT: BLUE YELLOW RED RED
IN: lug blicket wif OUT: GREEN RED
IN: lug blicket wif fep tufa tufa blicket zup OUT: YELLOW BLUE YELLOW GREEN RED
IN: lug OUT: RED
IN: tufa OUT: YELLOW
IN: wif tufa OUT: GREEN YELLOW
IN: lug blicket zup fep lug OUT: RED BLUE RED

*QUERY*
IN: zup blicket wif OUT: GREEN BLUE
IN: tufa blicket wif fep tufa gazzer zup OUT: YELLOW BLUE GREEN YELLOW
IN: zup lug gazzer wif OUT: BLUE RED GREEN
IN: tufa blicket zup OUT: BLUE YELLOW
IN: tufa blicket tufa OUT: YELLOW YELLOW
IN: tufa blicket lug OUT: RED YELLOW
IN: wif OUT: GREEN
IN: wif gazzer wif OUT: GREEN GREEN
IN: zup gazzer tufa OUT: BLUE YELLOW
IN: lug wif OUT: RED GREEN

*GRAMMAR*
tufa -> YELLOW 
 lug -> RED 
 zup -> BLUE 
 wif -> GREEN 
 x1 fep x2 -> [x2] [x1] 
 u1 blicket u2 -> [u2] [u1] 
 x1 gazzer u1 -> [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 